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Copy pathint.rs
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859 lines (759 loc) · 26.5 KB
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use super::{float, PyBool, PyByteArray, PyBytes, PyStr, PyType, PyTypeRef};
use crate::{
builtins::PyStrRef,
bytesinner::PyBytesInner,
class::PyClassImpl,
common::{
format::FormatSpec,
hash,
int::{bigint_to_finite_float, bytes_to_int},
},
convert::{IntoPyException, ToPyObject, ToPyResult},
function::{
ArgByteOrder, ArgIntoBool, OptionalArg, OptionalOption, PyArithmeticValue,
PyComparisonValue,
},
protocol::{PyNumber, PyNumberMethods},
types::{AsNumber, Comparable, Constructor, Hashable, PyComparisonOp, Representable},
AsObject, Context, Py, PyObject, PyObjectRef, PyPayload, PyRef, PyResult,
TryFromBorrowedObject, VirtualMachine,
};
use num_bigint::{BigInt, Sign};
use num_integer::Integer;
use num_rational::Ratio;
use num_traits::{One, Pow, PrimInt, Signed, ToPrimitive, Zero};
use std::ops::{Div, Neg};
use std::{fmt, ops::Not};
#[pyclass(module = false, name = "int")]
#[derive(Debug)]
pub struct PyInt {
value: BigInt,
}
impl fmt::Display for PyInt {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
BigInt::fmt(&self.value, f)
}
}
pub type PyIntRef = PyRef<PyInt>;
impl<T> From<T> for PyInt
where
T: Into<BigInt>,
{
fn from(v: T) -> Self {
Self { value: v.into() }
}
}
impl PyPayload for PyInt {
fn class(vm: &VirtualMachine) -> &'static Py<PyType> {
vm.ctx.types.int_type
}
fn into_pyobject(self, vm: &VirtualMachine) -> PyObjectRef {
vm.ctx.new_int(self.value).into()
}
}
macro_rules! impl_into_pyobject_int {
($($t:ty)*) => {$(
impl ToPyObject for $t {
fn to_pyobject(self, vm: &VirtualMachine) -> PyObjectRef {
vm.ctx.new_int(self).into()
}
}
)*};
}
impl_into_pyobject_int!(isize i8 i16 i32 i64 i128 usize u8 u16 u32 u64 u128 BigInt);
macro_rules! impl_try_from_object_int {
($(($t:ty, $to_prim:ident),)*) => {$(
impl<'a> TryFromBorrowedObject<'a> for $t {
fn try_from_borrowed_object(vm: &VirtualMachine, obj: &'a PyObject) -> PyResult<Self> {
obj.try_value_with(|int: &PyInt| {
int.try_to_primitive(vm)
}, vm)
}
}
)*};
}
impl_try_from_object_int!(
(isize, to_isize),
(i8, to_i8),
(i16, to_i16),
(i32, to_i32),
(i64, to_i64),
(i128, to_i128),
(usize, to_usize),
(u8, to_u8),
(u16, to_u16),
(u32, to_u32),
(u64, to_u64),
(u128, to_u128),
);
fn inner_pow(int1: &BigInt, int2: &BigInt, vm: &VirtualMachine) -> PyResult {
if int2.is_negative() {
let v1 = try_to_float(int1, vm)?;
let v2 = try_to_float(int2, vm)?;
float::float_pow(v1, v2, vm)
} else {
let value = if let Some(v2) = int2.to_u64() {
return Ok(vm.ctx.new_int(Pow::pow(int1, v2)).into());
} else if int1.is_one() {
1
} else if int1.is_zero() {
0
} else if int1 == &BigInt::from(-1) {
if int2.is_odd() {
-1
} else {
1
}
} else {
// missing feature: BigInt exp
// practically, exp over u64 is not possible to calculate anyway
return Ok(vm.ctx.not_implemented());
};
Ok(vm.ctx.new_int(value).into())
}
}
fn inner_mod(int1: &BigInt, int2: &BigInt, vm: &VirtualMachine) -> PyResult {
if int2.is_zero() {
Err(vm.new_zero_division_error("integer modulo by zero".to_owned()))
} else {
Ok(vm.ctx.new_int(int1.mod_floor(int2)).into())
}
}
fn inner_floordiv(int1: &BigInt, int2: &BigInt, vm: &VirtualMachine) -> PyResult {
if int2.is_zero() {
Err(vm.new_zero_division_error("integer division by zero".to_owned()))
} else {
Ok(vm.ctx.new_int(int1.div_floor(int2)).into())
}
}
fn inner_divmod(int1: &BigInt, int2: &BigInt, vm: &VirtualMachine) -> PyResult {
if int2.is_zero() {
return Err(vm.new_zero_division_error("integer division or modulo by zero".to_owned()));
}
let (div, modulo) = int1.div_mod_floor(int2);
Ok(vm.new_tuple((div, modulo)).into())
}
fn inner_lshift(base: &BigInt, bits: &BigInt, vm: &VirtualMachine) -> PyResult {
inner_shift(
base,
bits,
|base, bits| base << bits,
|bits, vm| {
bits.to_usize().ok_or_else(|| {
vm.new_overflow_error("the number is too large to convert to int".to_owned())
})
},
vm,
)
}
fn inner_rshift(base: &BigInt, bits: &BigInt, vm: &VirtualMachine) -> PyResult {
inner_shift(
base,
bits,
|base, bits| base >> bits,
|bits, _vm| Ok(bits.to_usize().unwrap_or(usize::MAX)),
vm,
)
}
fn inner_shift<F, S>(
base: &BigInt,
bits: &BigInt,
shift_op: F,
shift_bits: S,
vm: &VirtualMachine,
) -> PyResult
where
F: Fn(&BigInt, usize) -> BigInt,
S: Fn(&BigInt, &VirtualMachine) -> PyResult<usize>,
{
if bits.is_negative() {
Err(vm.new_value_error("negative shift count".to_owned()))
} else if base.is_zero() {
Ok(vm.ctx.new_int(0).into())
} else {
shift_bits(bits, vm).map(|bits| vm.ctx.new_int(shift_op(base, bits)).into())
}
}
fn inner_truediv(i1: &BigInt, i2: &BigInt, vm: &VirtualMachine) -> PyResult {
if i2.is_zero() {
return Err(vm.new_zero_division_error("division by zero".to_owned()));
}
let float = Ratio::from(i1.clone()).div(i2).to_f64().unwrap();
if float.is_infinite() {
Err(vm.new_exception_msg(
vm.ctx.exceptions.overflow_error.to_owned(),
"integer division result too large for a float".to_owned(),
))
} else {
Ok(vm.ctx.new_float(float).into())
}
}
impl Constructor for PyInt {
type Args = IntOptions;
fn py_new(cls: PyTypeRef, options: Self::Args, vm: &VirtualMachine) -> PyResult {
if cls.is(PyBool::class(vm)) {
return Err(
vm.new_type_error("int.__new__(bool) is not safe, use bool.__new__()".to_owned())
);
}
let value = if let OptionalArg::Present(val) = options.val_options {
if let OptionalArg::Present(base) = options.base {
let base = base
.try_index(vm)?
.as_bigint()
.to_u32()
.filter(|&v| v == 0 || (2..=36).contains(&v))
.ok_or_else(|| {
vm.new_value_error("int() base must be >= 2 and <= 36, or 0".to_owned())
})?;
try_int_radix(&val, base, vm)
} else {
let val = if cls.is(vm.ctx.types.int_type) {
match val.downcast_exact::<PyInt>(vm) {
Ok(i) => {
return Ok(i.into_pyref().into());
}
Err(val) => val,
}
} else {
val
};
val.try_int(vm).map(|x| x.as_bigint().clone())
}
} else if let OptionalArg::Present(_) = options.base {
Err(vm.new_type_error("int() missing string argument".to_owned()))
} else {
Ok(Zero::zero())
}?;
Self::with_value(cls, value, vm).to_pyresult(vm)
}
}
impl PyInt {
fn with_value<T>(cls: PyTypeRef, value: T, vm: &VirtualMachine) -> PyResult<PyRef<Self>>
where
T: Into<BigInt> + ToPrimitive,
{
if cls.is(vm.ctx.types.int_type) {
Ok(vm.ctx.new_int(value))
} else if cls.is(vm.ctx.types.bool_type) {
Ok(vm.ctx.new_bool(!value.into().eq(&BigInt::zero())))
} else {
PyInt::from(value).into_ref_with_type(vm, cls)
}
}
pub fn as_bigint(&self) -> &BigInt {
&self.value
}
// _PyLong_AsUnsignedLongMask
pub fn as_u32_mask(&self) -> u32 {
let v = self.as_bigint();
v.to_u32()
.or_else(|| v.to_i32().map(|i| i as u32))
.unwrap_or_else(|| {
let mut out = 0u32;
for digit in v.iter_u32_digits() {
out = out.wrapping_shl(32) | digit;
}
match v.sign() {
num_bigint::Sign::Minus => out * -1i32 as u32,
_ => out,
}
})
}
pub fn try_to_primitive<'a, I>(&'a self, vm: &VirtualMachine) -> PyResult<I>
where
I: PrimInt + TryFrom<&'a BigInt>,
{
I::try_from(self.as_bigint()).map_err(|_| {
vm.new_overflow_error(format!(
"Python int too large to convert to Rust {}",
std::any::type_name::<I>()
))
})
}
#[inline]
fn int_op<F>(&self, other: PyObjectRef, op: F, vm: &VirtualMachine) -> PyArithmeticValue<BigInt>
where
F: Fn(&BigInt, &BigInt) -> BigInt,
{
let r = other
.payload_if_subclass::<PyInt>(vm)
.map(|other| op(&self.value, &other.value));
PyArithmeticValue::from_option(r)
}
#[inline]
fn general_op<F>(&self, other: PyObjectRef, op: F, vm: &VirtualMachine) -> PyResult
where
F: Fn(&BigInt, &BigInt) -> PyResult,
{
if let Some(other) = other.payload_if_subclass::<PyInt>(vm) {
op(&self.value, &other.value)
} else {
Ok(vm.ctx.not_implemented())
}
}
}
#[pyclass(
flags(BASETYPE),
with(Comparable, Hashable, Constructor, AsNumber, Representable)
)]
impl PyInt {
#[pymethod(name = "__radd__")]
#[pymethod(magic)]
fn add(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyArithmeticValue<BigInt> {
self.int_op(other, |a, b| a + b, vm)
}
#[pymethod(magic)]
fn sub(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyArithmeticValue<BigInt> {
self.int_op(other, |a, b| a - b, vm)
}
#[pymethod(magic)]
fn rsub(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyArithmeticValue<BigInt> {
self.int_op(other, |a, b| b - a, vm)
}
#[pymethod(name = "__rmul__")]
#[pymethod(magic)]
fn mul(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyArithmeticValue<BigInt> {
self.int_op(other, |a, b| a * b, vm)
}
#[pymethod(magic)]
fn truediv(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyResult {
self.general_op(other, |a, b| inner_truediv(a, b, vm), vm)
}
#[pymethod(magic)]
fn rtruediv(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyResult {
self.general_op(other, |a, b| inner_truediv(b, a, vm), vm)
}
#[pymethod(magic)]
fn floordiv(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyResult {
self.general_op(other, |a, b| inner_floordiv(a, b, vm), vm)
}
#[pymethod(magic)]
fn rfloordiv(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyResult {
self.general_op(other, |a, b| inner_floordiv(b, a, vm), vm)
}
#[pymethod(magic)]
fn lshift(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyResult {
self.general_op(other, |a, b| inner_lshift(a, b, vm), vm)
}
#[pymethod(magic)]
fn rlshift(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyResult {
self.general_op(other, |a, b| inner_lshift(b, a, vm), vm)
}
#[pymethod(magic)]
fn rshift(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyResult {
self.general_op(other, |a, b| inner_rshift(a, b, vm), vm)
}
#[pymethod(magic)]
fn rrshift(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyResult {
self.general_op(other, |a, b| inner_rshift(b, a, vm), vm)
}
#[pymethod(name = "__rxor__")]
#[pymethod(magic)]
pub fn xor(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyArithmeticValue<BigInt> {
self.int_op(other, |a, b| a ^ b, vm)
}
#[pymethod(name = "__ror__")]
#[pymethod(magic)]
pub fn or(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyArithmeticValue<BigInt> {
self.int_op(other, |a, b| a | b, vm)
}
#[pymethod(name = "__rand__")]
#[pymethod(magic)]
pub fn and(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyArithmeticValue<BigInt> {
self.int_op(other, |a, b| a & b, vm)
}
fn modpow(&self, other: PyObjectRef, modulus: PyObjectRef, vm: &VirtualMachine) -> PyResult {
let modulus = match modulus.payload_if_subclass::<PyInt>(vm) {
Some(val) => val.as_bigint(),
None => return Ok(vm.ctx.not_implemented()),
};
if modulus.is_zero() {
return Err(vm.new_value_error("pow() 3rd argument cannot be 0".to_owned()));
}
self.general_op(
other,
|a, b| {
let i = if b.is_negative() {
// modular multiplicative inverse
// based on rust-num/num-integer#10, should hopefully be published soon
fn normalize(a: BigInt, n: &BigInt) -> BigInt {
let a = a % n;
if a.is_negative() {
a + n
} else {
a
}
}
fn inverse(a: BigInt, n: &BigInt) -> Option<BigInt> {
use num_integer::*;
let ExtendedGcd { gcd, x: c, .. } = a.extended_gcd(n);
if gcd.is_one() {
Some(normalize(c, n))
} else {
None
}
}
let a = inverse(a % modulus, modulus).ok_or_else(|| {
vm.new_value_error(
"base is not invertible for the given modulus".to_owned(),
)
})?;
let b = -b;
a.modpow(&b, modulus)
} else {
a.modpow(b, modulus)
};
Ok(vm.ctx.new_int(i).into())
},
vm,
)
}
#[pymethod(magic)]
fn pow(
&self,
other: PyObjectRef,
r#mod: OptionalOption<PyObjectRef>,
vm: &VirtualMachine,
) -> PyResult {
match r#mod.flatten() {
Some(modulus) => self.modpow(other, modulus, vm),
None => self.general_op(other, |a, b| inner_pow(a, b, vm), vm),
}
}
#[pymethod(magic)]
fn rpow(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyResult {
self.general_op(other, |a, b| inner_pow(b, a, vm), vm)
}
#[pymethod(name = "__mod__")]
fn mod_(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyResult {
self.general_op(other, |a, b| inner_mod(a, b, vm), vm)
}
#[pymethod(magic)]
fn rmod(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyResult {
self.general_op(other, |a, b| inner_mod(b, a, vm), vm)
}
#[pymethod(magic)]
fn divmod(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyResult {
self.general_op(other, |a, b| inner_divmod(a, b, vm), vm)
}
#[pymethod(magic)]
fn rdivmod(&self, other: PyObjectRef, vm: &VirtualMachine) -> PyResult {
self.general_op(other, |a, b| inner_divmod(b, a, vm), vm)
}
#[pymethod(magic)]
fn neg(&self) -> BigInt {
-(&self.value)
}
#[pymethod(magic)]
fn abs(&self) -> BigInt {
self.value.abs()
}
#[pymethod(magic)]
fn round(
zelf: PyRef<Self>,
precision: OptionalArg<PyObjectRef>,
vm: &VirtualMachine,
) -> PyResult<PyRef<Self>> {
match precision {
OptionalArg::Missing => (),
OptionalArg::Present(ref value) => {
// Only accept int type ndigits
let _ndigits = value.payload_if_subclass::<PyInt>(vm).ok_or_else(|| {
vm.new_type_error(format!(
"'{}' object cannot be interpreted as an integer",
value.class().name()
))
})?;
}
}
Ok(zelf)
}
#[pymethod(magic)]
fn int(zelf: PyRef<Self>) -> PyRef<Self> {
zelf
}
#[pymethod(magic)]
fn pos(&self) -> BigInt {
self.value.clone()
}
#[pymethod(magic)]
fn float(&self, vm: &VirtualMachine) -> PyResult<f64> {
try_to_float(&self.value, vm)
}
#[pymethod(magic)]
fn trunc(zelf: PyRef<Self>, vm: &VirtualMachine) -> PyRef<Self> {
Self::clone_if_subclass(zelf, vm)
}
#[pymethod(magic)]
fn floor(zelf: PyRef<Self>, vm: &VirtualMachine) -> PyRef<Self> {
Self::clone_if_subclass(zelf, vm)
}
#[pymethod(magic)]
fn ceil(zelf: PyRef<Self>, vm: &VirtualMachine) -> PyRef<Self> {
Self::clone_if_subclass(zelf, vm)
}
#[pymethod(magic)]
fn index(zelf: PyRef<Self>) -> PyRef<Self> {
zelf
}
#[pymethod(magic)]
fn invert(&self) -> BigInt {
!(&self.value)
}
#[pymethod(magic)]
fn format(&self, spec: PyStrRef, vm: &VirtualMachine) -> PyResult<String> {
FormatSpec::parse(spec.as_str())
.and_then(|format_spec| format_spec.format_int(&self.value))
.map_err(|err| err.into_pyexception(vm))
}
#[pymethod(magic)]
fn bool(&self) -> bool {
!self.value.is_zero()
}
#[pymethod(magic)]
fn sizeof(&self) -> usize {
std::mem::size_of::<Self>() + (((self.value.bits() + 7) & !7) / 8) as usize
}
#[pymethod]
fn as_integer_ratio(&self, vm: &VirtualMachine) -> (PyRef<Self>, i32) {
(vm.ctx.new_bigint(&self.value), 1)
}
#[pymethod]
fn bit_length(&self) -> u64 {
self.value.bits()
}
#[pymethod]
fn conjugate(zelf: PyRef<Self>, vm: &VirtualMachine) -> PyRef<Self> {
Self::clone_if_subclass(zelf, vm)
}
#[pyclassmethod]
fn from_bytes(
cls: PyTypeRef,
args: IntFromByteArgs,
vm: &VirtualMachine,
) -> PyResult<PyRef<Self>> {
let signed = args.signed.map_or(false, Into::into);
let value = match (args.byteorder, signed) {
(ArgByteOrder::Big, true) => BigInt::from_signed_bytes_be(args.bytes.as_bytes()),
(ArgByteOrder::Big, false) => BigInt::from_bytes_be(Sign::Plus, args.bytes.as_bytes()),
(ArgByteOrder::Little, true) => BigInt::from_signed_bytes_le(args.bytes.as_bytes()),
(ArgByteOrder::Little, false) => {
BigInt::from_bytes_le(Sign::Plus, args.bytes.as_bytes())
}
};
Self::with_value(cls, value, vm)
}
#[pymethod]
fn to_bytes(&self, args: IntToByteArgs, vm: &VirtualMachine) -> PyResult<PyBytes> {
let signed = args.signed.map_or(false, Into::into);
let byte_len = args.length.try_to_primitive(vm)?;
let value = self.as_bigint();
match value.sign() {
Sign::Minus if !signed => {
return Err(
vm.new_overflow_error("can't convert negative int to unsigned".to_owned())
)
}
Sign::NoSign => return Ok(vec![0u8; byte_len].into()),
_ => {}
}
let mut origin_bytes = match (args.byteorder, signed) {
(ArgByteOrder::Big, true) => value.to_signed_bytes_be(),
(ArgByteOrder::Big, false) => value.to_bytes_be().1,
(ArgByteOrder::Little, true) => value.to_signed_bytes_le(),
(ArgByteOrder::Little, false) => value.to_bytes_le().1,
};
let origin_len = origin_bytes.len();
if origin_len > byte_len {
return Err(vm.new_overflow_error("int too big to convert".to_owned()));
}
let mut append_bytes = match value.sign() {
Sign::Minus => vec![255u8; byte_len - origin_len],
_ => vec![0u8; byte_len - origin_len],
};
let bytes = match args.byteorder {
ArgByteOrder::Big => {
let mut bytes = append_bytes;
bytes.append(&mut origin_bytes);
bytes
}
ArgByteOrder::Little => {
let mut bytes = origin_bytes;
bytes.append(&mut append_bytes);
bytes
}
};
Ok(bytes.into())
}
#[inline]
fn clone_if_subclass(zelf: PyRef<Self>, vm: &VirtualMachine) -> PyRef<Self> {
if zelf.class().is(vm.ctx.types.int_type) {
return zelf;
}
vm.ctx.new_bigint(&zelf.value)
}
#[pygetset]
fn real(zelf: PyRef<Self>, vm: &VirtualMachine) -> PyRef<Self> {
Self::clone_if_subclass(zelf, vm)
}
#[pygetset]
fn imag(&self) -> usize {
0
}
#[pygetset]
fn numerator(zelf: PyRef<Self>, vm: &VirtualMachine) -> PyRef<Self> {
Self::clone_if_subclass(zelf, vm)
}
#[pygetset]
fn denominator(&self) -> usize {
1
}
#[pymethod]
/// Returns the number of ones 1 an int. When the number is < 0,
/// then it returns the number of ones of the absolute value.
fn bit_count(&self) -> u32 {
self.value.iter_u32_digits().map(|n| n.count_ones()).sum()
}
#[pymethod(magic)]
fn getnewargs(&self, vm: &VirtualMachine) -> PyObjectRef {
(self.value.clone(),).to_pyobject(vm)
}
}
impl Comparable for PyInt {
fn cmp(
zelf: &Py<Self>,
other: &PyObject,
op: PyComparisonOp,
vm: &VirtualMachine,
) -> PyResult<PyComparisonValue> {
let r = other
.payload_if_subclass::<PyInt>(vm)
.map(|other| op.eval_ord(zelf.value.cmp(&other.value)));
Ok(PyComparisonValue::from_option(r))
}
}
impl Representable for PyInt {
#[inline]
fn repr_str(zelf: &Py<Self>, _vm: &VirtualMachine) -> PyResult<String> {
Ok(zelf.value.to_string())
}
}
impl Hashable for PyInt {
#[inline]
fn hash(zelf: &Py<Self>, _vm: &VirtualMachine) -> PyResult<hash::PyHash> {
Ok(hash::hash_bigint(zelf.as_bigint()))
}
}
impl AsNumber for PyInt {
fn as_number() -> &'static PyNumberMethods {
static AS_NUMBER: PyNumberMethods = PyInt::AS_NUMBER;
&AS_NUMBER
}
#[inline]
fn clone_exact(zelf: &Py<Self>, vm: &VirtualMachine) -> PyRef<Self> {
vm.ctx.new_bigint(&zelf.value)
}
}
impl PyInt {
pub(super) const AS_NUMBER: PyNumberMethods = PyNumberMethods {
add: Some(|num, other, vm| PyInt::number_op(num, other, |a, b, _vm| a + b, vm)),
subtract: Some(|num, other, vm| PyInt::number_op(num, other, |a, b, _vm| a - b, vm)),
multiply: Some(|num, other, vm| PyInt::number_op(num, other, |a, b, _vm| a * b, vm)),
remainder: Some(|num, other, vm| PyInt::number_op(num, other, inner_mod, vm)),
divmod: Some(|num, other, vm| PyInt::number_op(num, other, inner_divmod, vm)),
power: Some(|num, other, vm| PyInt::number_op(num, other, inner_pow, vm)),
negative: Some(|num, vm| (&PyInt::number_downcast(num).value).neg().to_pyresult(vm)),
positive: Some(|num, vm| Ok(PyInt::number_downcast_exact(num, vm).into())),
absolute: Some(|num, vm| PyInt::number_downcast(num).value.abs().to_pyresult(vm)),
boolean: Some(|num, _vm| Ok(PyInt::number_downcast(num).value.is_zero())),
invert: Some(|num, vm| (&PyInt::number_downcast(num).value).not().to_pyresult(vm)),
lshift: Some(|num, other, vm| PyInt::number_op(num, other, inner_lshift, vm)),
rshift: Some(|num, other, vm| PyInt::number_op(num, other, inner_rshift, vm)),
and: Some(|num, other, vm| PyInt::number_op(num, other, |a, b, _vm| a & b, vm)),
xor: Some(|num, other, vm| PyInt::number_op(num, other, |a, b, _vm| a ^ b, vm)),
or: Some(|num, other, vm| PyInt::number_op(num, other, |a, b, _vm| a | b, vm)),
int: Some(|num, vm| Ok(PyInt::number_downcast_exact(num, vm))),
float: Some(|num, vm| {
let zelf = PyInt::number_downcast(num);
try_to_float(&zelf.value, vm).map(|x| vm.ctx.new_float(x))
}),
floor_divide: Some(|num, other, vm| PyInt::number_op(num, other, inner_floordiv, vm)),
true_divide: Some(|num, other, vm| PyInt::number_op(num, other, inner_truediv, vm)),
index: Some(|num, vm| Ok(PyInt::number_downcast_exact(num, vm))),
..PyNumberMethods::NOT_IMPLEMENTED
};
fn number_op<F, R>(number: PyNumber, other: &PyObject, op: F, vm: &VirtualMachine) -> PyResult
where
F: FnOnce(&BigInt, &BigInt, &VirtualMachine) -> R,
R: ToPyResult,
{
if let (Some(a), Some(b)) = (number.obj.payload::<Self>(), other.payload::<Self>()) {
op(&a.value, &b.value, vm).to_pyresult(vm)
} else {
Ok(vm.ctx.not_implemented())
}
}
}
#[derive(FromArgs)]
pub struct IntOptions {
#[pyarg(positional, optional)]
val_options: OptionalArg<PyObjectRef>,
#[pyarg(any, optional)]
base: OptionalArg<PyObjectRef>,
}
#[derive(FromArgs)]
struct IntFromByteArgs {
bytes: PyBytesInner,
byteorder: ArgByteOrder,
#[pyarg(named, optional)]
signed: OptionalArg<ArgIntoBool>,
}
#[derive(FromArgs)]
struct IntToByteArgs {
length: PyIntRef,
byteorder: ArgByteOrder,
#[pyarg(named, optional)]
signed: OptionalArg<ArgIntoBool>,
}
fn try_int_radix(obj: &PyObject, base: u32, vm: &VirtualMachine) -> PyResult<BigInt> {
debug_assert!(base == 0 || (2..=36).contains(&base));
let opt = match_class!(match obj.to_owned() {
string @ PyStr => {
let s = string.as_str();
bytes_to_int(s.as_bytes(), base)
}
bytes @ PyBytes => {
let bytes = bytes.as_bytes();
bytes_to_int(bytes, base)
}
bytearray @ PyByteArray => {
let inner = bytearray.borrow_buf();
bytes_to_int(&inner, base)
}
_ => {
return Err(
vm.new_type_error("int() can't convert non-string with explicit base".to_owned())
);
}
});
match opt {
Some(int) => Ok(int),
None => Err(vm.new_value_error(format!(
"invalid literal for int() with base {}: {}",
base,
obj.repr(vm)?,
))),
}
}
// Retrieve inner int value:
pub(crate) fn get_value(obj: &PyObject) -> &BigInt {
&obj.payload::<PyInt>().unwrap().value
}
pub fn try_to_float(int: &BigInt, vm: &VirtualMachine) -> PyResult<f64> {
bigint_to_finite_float(int)
.ok_or_else(|| vm.new_overflow_error("int too large to convert to float".to_owned()))
}
pub(crate) fn init(context: &Context) {
PyInt::extend_class(context, context.types.int_type);
}